nk497 writes: "Will we soon be upgrading body parts like the components inside our PCs? "Human enhancement" technologies are quickly evolving, making it easier to treat health conditions — and make us more powerful. Neural implants are already being used to restore vision, but in the future it could be used to give us better than 20/20 eyesight. Bionic arms will extend beyond prostheses, and be used to help boost our strength — handy for working in a warehouse and for soldiers. “We use tools all the time to enhance our natural functions, and physical interaction is increasingly usurped by the virtual connections afforded by computers, smartphones and the internet," said one researcher. "So connecting these tools directly from the brain is perhaps not so far-fetched.”"

We're already upgrading body parts, but not like with a PC. Surgery is always dangerous, you would be a fool to go under the knife for an "enhancement" without a damned good medical reason.

I have a CrystaLens in my left eye that replaces the lens. I have better vision at all distances than most teenagers. I'll be 60 in a couple of months and don't even need reading glasses, and I was extremely nearsighted all my life before the surgery.

But if I hadn't developed a cataract in that eye, no way would I have le